212945973699 has 8 divisors (see below), whose sum is σ = 300629610000. Its totient is φ = 133613159936.

The previous prime is 212945973683. The next prime is 212945973761. The reversal of 212945973699 is 996379549212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212945973699 - 2⁴ = 212945973683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212945973619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2087705574 + ... + 2087705675.

It is an arithmetic number, because the mean of its divisors is an integer number (37578701250).

Almost surely, 2^212945973699 is an apocalyptic number.

212945973699 is a deficient number, since it is larger than the sum of its proper divisors (87683636301).

212945973699 is a wasteful number, since it uses less digits than its factorization.

212945973699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175411269.

The product of its digits is 66134880, while the sum is 66.

The spelling of 212945973699 in words is "two hundred twelve billion, nine hundred forty-five million, nine hundred seventy-three thousand, six hundred ninety-nine".